Forging process of extrusion roller of cement roller press

A technology of extrusion rolls and cement rolls, which is applied in the field of forging, can solve problems such as unfavorable inclusions, large diameters of extrusion roll parts, and ultra-standard ultrasonic flaw detection, achieving good continuity and compactness, strong thermal fatigue resistance, The effect of long service life

Inactive Publication Date: 2019-02-22
JIANGSU JINYUAN FORGE
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The split structure is prone to problems such as lateral deviation of the roller sleeve and the roller core, interference and looseness during the production process, and the use effect is not good. The cement roller press using the integral forged extrusion roller has obvious advantages. However, due to Extrusion roller parts have large di

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0013] Example one

[0014] A forging process for the squeeze roll of a cement roller press is characterized in that it comprises the following process steps:

[0015] a. Casting blank steel ingot, the weight percentage of chemical composition in the steel ingot is: C: 0.35%, Si: 1.5%, Al: 20%, Mg: 0.022%, Mn: 0.2%, Cr: 0.005%, W: 0.5%, Nb: 0.0055%, V: 0.5%, Cu: 1.0%, Ti: 0.15%, B: 0.25, Fe: 0.8%, Mo: 0.5%, S: 0.6%, the balance is Zn and inevitable impurities, casting The temperature of the formed steel ingot is reduced to 320°C, then heated to 600°C for 3 hours, the furnace is cooled to 300°C, held for 3 hours, then heated to 650°C, held for 10 hours, and cooled to 400°C at 45°C / hour. Cool down to 150°C at 25°C / hour;

[0016] b. Heat the steel ingot completed in step a to 1160 ℃, perform the first upsetting, draw length by WHF method, control the height-to-diameter ratio after drawing to 2.0, and the total forging ratio at 2.0; the width of the anvil when drawing by WHF method Ra...

Example Embodiment

[0022] Example two

[0023] A forging process for the squeeze roll of a cement roller press is characterized in that it comprises the following process steps:

[0024] a. Casting blank steel ingot, the weight percentage of chemical composition in the steel ingot is: C: 0.4%, Si: 2%, Al: 22%, Mg: 0.03%, Mn: 0.35%, Cr: 0.008%, W: 1%, Nb: 0.006%, V: 1%, Cu: 1.3%, Ti: 0.2%, B: 0.3%, Fe: 0.9%, Mo: 0.8%, S: 0.09%, the balance is Zn and inevitable impurities, The temperature of the cast steel ingot is reduced to 320℃, then heated to 650℃, kept for 4 hours, the furnace is cooled to 300℃, kept for 3 hours, then heated to 690℃, kept for 10 hours, and cooled to 400℃ at 45℃ / hour. Cool down to 150°C at 25°C / hour;

[0025] b. Heat the steel ingot completed in step a to 1200 ℃, perform the first upsetting, draw length by WHF method, control the height to diameter ratio after drawing to 2.1, and the total forging ratio at 2.15; the width of the anvil when drawing length by WHF method Ratio W / H = ...

Example Embodiment

[0031] Example three

[0032] A forging process for the squeeze roll of a cement roller press is characterized in that it comprises the following process steps:

[0033] a. Casting blank steel ingot, the weight percentage of chemical composition in the steel ingot is: C: 0.45%, Si: 2.5%, Al: 23%, Mg: 0.032%, Mn: 0.38%, Cr: 0.01%, W: 1.5%, Nb: 0.0065%, V: 1.5%, Cu: 1.5%, Ti: 0.25%, B: 0.35%, Fe: 1%, Mo: 0.9%, S: 0.1%, the balance is Zn and inevitable impurities, The temperature of the cast steel ingot is lowered to 320℃, then heated to 700℃, kept for 5 hours, the furnace is cooled to 300℃, kept for 3 hours, then heated to 750℃, kept for 10 hours, and cooled to 400℃ at 45℃ / hour. Cool down to 150°C at 25°C / hour;

[0034] b. Heat the steel ingot completed in step a to 1230 ℃, perform the first upsetting, draw length by WHF method, control the height-to-diameter ratio after drawing to 2.2, and the total forging ratio at 2.2; the width of the anvil when drawing by WHF method Ratio W / H=0...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a forging process of an extrusion roller of a cement roller press. The forging process is characterized by comprising the following steps that that a blank steel ingot is cast, wherein the steel ingot comprises the following chemical components of, by weight, greater than or equal to 0.35% and less than or equal to 0.45% of C, greater than or equal to 1.5% and less than orequal to 2.5% of Si, greater than or equal to 20% and less than or equal to 23% of Al, greater than or equal to 0.022% and less than or equal to 0.032% of Mg, greater than or equal to 0.2% and less than or equal to 0.38% of Mn, greater than or equal to 0.005% and less than or equal to 0.01% of Cr, greater than or equal to 0.5% and less than or equal to 1.5% of W, greater than or equal to 0.0055%and less than or equal to 0.0065% of Nb, greater than or equal to 0.5% and less than or equal to 1.5% of V, greater than or equal to 1.0% and less than or equal to 1.5% of Cu, greater than or equal to0.15% and less than or equal to 0.25% of Ti, greater than or equal to 0.25% and less than or equal to 0.35% of B, greater than or equal to 0.8% and less than or equal to 1% of Fe, greater than or equal to 0.5% and less than or equal to 0.9% of Mo, less than or equal to 0.1% of S and the balance Zn and inevitable impurities; then heating and upsetting are carried out twice correspondingly; then controlled cooling is carried out, wherein the cooling speed is 35 DEG C/h; and finally heat treatment after forging is carried out.

Description

technical field [0001] The invention belongs to the technical field of forging, and in particular relates to a forging process of extrusion rollers of cement roller presses. Background technique [0002] Squeeze rollers are the key components of cement roller presses. Squeeze rollers are divided into integral forging and split structures. The split structure is prone to problems such as lateral deviation of the roller sleeve and the roller core, interference and looseness during the production process, and the use effect is not good. The cement roller press using the integral forged extrusion roller has obvious advantages. However, due to Extrusion roller parts have large diameter and short length, and the overall forged extrusion roller has great limitations, which is not conducive to the control of the shape of inclusions in the steel. It is easy to form small cavities and cracks around sheet-like inclusions and inclusions in the cold working process. Afterwards, ultrason...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B21K1/02B21J5/08B21J5/00C22C18/04C22F1/16
CPCB21K1/02B21J5/002B21J5/08C22C18/04C22F1/165
Inventor 葛艳明袁志伟李明
Owner JIANGSU JINYUAN FORGE
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap